I'd say 98%+ probable it's a typo but I do believe I would contact them to remove that last 2%. I spent my life entering into and managing fairly large deals and would never leave the possibility of some horrible misunderstanding hanging out there.
I heeded your advice and sent them an email this morning asking for clarification - 8 hours later, still no reply. Bit furstrating. I may have to call again but I'm overseas and am clocking up a bit of a bill on my mobile!
Not sure where you are getting your data, but the Lunars are pricier than the Koalas here in America. They have the same price starting out, but premiums always go up on the Lunars.